Fire-alarm and multiple-circuit closer.



I. A. BUNCH.

FIRE ALARM AND MULTIPLE CIRCUIT CLOSER.

APPHCATION FILED JUNE 30.1916.

1,220,493. Patented Mar. 27, 1917.

2 SHEETS-SHEET Snow tow wi/lmmw J. A. BUNCH.

FIRE ALARM AND MULTIPLE CIRCUIT CLOSER;

Patented Mar. 27, 1917.

2 SHEETS-SHEE1' 2.

APPLICATION FILED JUNE 30, L916.

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BUNCH, OF ADAMS, OREGON.

FIRE-ALARM AND MULTIPLE-CIBCUIT CLOSER.

To all whom it may concern:

' Be it known that I, JOHN A. BUNCH, a citizen of the United States, residing at Adams, in the county of Umatilla, State of Oregon, have invented a new and useful Fire- Alarm and Multiple-Circuit Closer; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to. which it appertains'to make and use the same.

This invention relates to improved fire alarm and circuit closer therefor, and an object of the invention is to provide an improved multiple contact circuit closer, comprising a stationary member and a movable member carried by a thermostatic device, the expansion and contraction of which moves the movable member into and from the stationary member, for closing a plurality of circuits at the same time.

In practical fields the invention may necessitate alterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in drawings and claimed.

In the drawings Figure 1 is a view in elevation showing the improved fire alarm system and circuit 4 closer as applied.

Fig. 2 is an enlarged View partly in elevation and partly in section showing a circuit closer having a multiple of contact members, for use in connection with a .fire alarm system.

Fig. 3 is a plan view of the stationary member of the circuit closer, showing the multiple contact members.

Fig. 4 is a detail view of the movable member of the circuit closer.

Fig. 5 is a vertical sectional view through the stationary member of the circuit closer, showing the movable member in dotted lines.

Fig. 6 is a sectional view on the line 66 of Fig. 2.

Referring more especially to the drawings, 1 designates a thermostatic device, which is designed to expand and contract incident to the heat, and is supported by a suitable plate 2, which may be secured to the ceiling of a room by means of the screws 3. A screw 4 secures the thermostatic device to the plate 2.- To the bottom portion of the thermostatic device a contact Specification of Letters aatent. Application filed June 80, 1916. Serial No. 106,814.

Patented Mar. 27, 1917.

member 5 is secured by means of a screw 6. A bracket 7 is secured to the ceiling by means of the screws 8, and this bracket 7 carries a stationary member 9 which is hollow and conical and is adapted to telescopi cally receive the conical movable contact member 5, which is carried by the thermostatic device. The member 9 is provided w1th binding screws 10 and 11 arranged diametrically opposite each other. The binding screw 10 is connected to the battery 12, by means of a lead 13, which battery 12 is connected to The bell 14, in turn, is connected to a second bell 16, by means of a lead 17. The second bell 16 is connected to an annunciator 18 by the wire or lead 19, while the annunciator is connected to the binding screw 11 by the Wire or lead 20. It will be seen that when the thermostatic device expands, incident to the intense heat in the room, in case of fire, the movable member 5 moves downwardly and enters the member 9 telescopically, so that the contact plates 21 on the member 5 will engage the contact plates 22. in which the screws 10 and 11 are threaded, thereby closing the circuit and ringing the bells 14 and 16 and actuating the annunciator, which may be of any conventional con struction, thereby indicating in what rooms the fire has occurred.

It is to be observed that the stationary member 9, as shown in'Fig. 5, is constructed integral with the bracket 7, which is constructed of any suitable insulating material, as shown. The member 9 is also constructed of insulating material. However, the bracket 7 is provided with an interior reinforcing member 23, thereby strengthening the bracket 7. In Figs. 2 to 6 inclusive it is to be noted that the stationary conical member 9 is provided with a plurality of binding screws 24 and 25, 26 and .27, 28 and 29, 30 and 31, 32 and 33, 34 and 35, 36 and 37, and 38 and 39. C nnected to the binding screw 24 is a lead or wire 40 which is connected to the battery 41, which, in

turn, is connected to an annunciator 42 by the wire or lead 43. The binding screw 25 has a lead or wire 44, in turn, connected to the annunciator 42. A wire 45 is connected to the binding screw 37, which wire 45 is, in turn, connected to a bell 46. A wire or lead 47 is connected to a battery 48 and is, in turn, connected to the binding screw 36. The battery 48 is connected a bell 14 by means of a lead 15.

to the bell 4:6 by the lead or wire 49. A

lead or wire 50 extending from the battery member 9, 1n vided with a lurality of raised parts 55 and through W ich said binding screws 2a forcing the member to 39 inclusive extend, so that their contact- 'ing terminals 56 protrude beyond the inner surfaces of said raised parts. It is to be noted that the other binding screws have leads or wires extending therefrom, but not designated by reference characters, but are designed for the purpose of connecting .to other devices, so as to provide other circuits to be closed. The movable member 5, which is carried by the thermostatic. device is constructed of insulating material, and is provided with strips of conducting material embedded therein. These strips 57 are designed to bridge the contacting terminals 56 of said binding screws, which are arranged in pairs, so as to close a multiple of circuits. intense heat in a room incident to a fire, the thermostatic device 1 will expand, thereby 5 downwardly and telescopically into the member 9, whereby the strips 57 will contact respectively with the binding screws, thereby closing the circuits,

as shown in Fig. 2.

The invention having been set forth, what is claimed as new and useful is 1. In a device as set forth, a movable part having a member provided with a plurality It is to be noted that from the' of contacting strips, a bracket, a hollow member carried by said bracket and being conical and adapted to receive the first member, and a plurality of contacts carried by the second member to be bridged in pairs by the strips of the first member.

2. In a multiple contact circuit closing device, an expansible device, a member having a plurality of contacting strips embedded therein carried by the expansible device, a second member which is hollow and corresponding in shape with and de-' signed to receive the first member, a plurality of contact terminals carried by the second member and arranged in pairs, each pair designed to be bridged by one of the strips of the first member.

3. In a device as set forth, an expansible device, a stationary support to which said device is secured, a U-shaped bracket arching downwardly and under the expansible device, a cone-shaped member carried by the under surface of the expansible device, a hollow cone-shaped member formed integral with said bracket and adapted to receive the first member, the first member having contacting strip terminals, and a pair of contacting terminals carried by the hollow conical member, and designed to be connected electrically by the contacting strip terminals, when the first member is forced into the second member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN A. BUNCH. Witnesses:

F. S. La Grow, J. P. BUNCH. 

